You suddenly received an email in your Hong Kong HSBC account with the subject line “Compliance Due Diligence Inquiry Letter.” The bank is requesting that you provide the following within 14 days: a description of your company’s business nature, a list of major customers and suppliers, transaction records for the past six months, and documentation proving your company’s substantive business operations.What should I do?

Don’t panic just yet—but every day you wait is one day less in your window of opportunity. Today, we’ll break down the underlying logic of bank risk control and the standard response procedures in full detail.

I. The Three-Tier Review Mechanism for Bank Risk Control

The three-tier review process can be triggered simultaneously or individually. Triggering any one of these tiers may result in an inquiry letter.CoR certification covers both KYC and CRS compliance requirements, making it the most efficient compliance certification.

II. Which actions are most likely to trigger risk control measures?

1. Frequent, large-value cross-border transfers, particularly transactions involving high-risk countries or regions

2. Discrepancies between account balances and reported business scale—large cash flows in small companies are the most typical red flag

3. Frequently changing linked accounts or banks—this is considered a highly sensitive activity by anti-money laundering systems

4. Transfer funds immediately upon receiving payment from a third party, especially to a third party unrelated to the recipient.

5. Recurring transfers between multiple accounts—the banking system automatically detects recurring transaction patterns

If your account meets any of the following criteria,We recommend conducting a compliance review as soon as possible; don’t wait until you receive an inquiry letter to take action.

III. Standard Response Process Upon Receipt of an Inquiry Letter

1. Verify the authenticity of the letter and the response deadline—usually 14–30 days—and be sure not to miss it.

2. Trace the chain of funds—the business context, contracts, and logistics documentation for each large transaction

3. Prepare documentation proving the company’s substantive operations—office address, employee records, and minutes of board meetings

4. If you already have a CoR, submit it as a core qualification; if not, apply for it simultaneously and inform the bank that “CoR certification has been initiated.”

5. Formal Response + Ongoing Follow-up—Proactively check on the status of your request after submission

Attention:Never respond hastily when you're flustered—writing a bunch of useless explanations without providing solid evidence will only make the bank think you're trying to hide something.

Cell phone: 18676749275 ｜ WeChat: qcygscszk

Contact us now for a free compliance risk assessment.

IV. Methods for Constructing Fund Explanation Chains in Different Scenarios

Every scenario requires a complete, traceable chain of evidence.It's not enough for your explanation to make sense; you need to provide documentation to back it up.

V. Emergency Measures to Take After an Account Is Frozen

1. Step 1: Understand the reason for the freeze—risk control freeze vs. judicial freeze vs. administrative freeze; the procedures for handling each are completely different.

2. Step 2: Appeal Process and Documentation Requirements for Risk Control Freezes—A complete set of compliance documents is required

3. Step 3: The Importance of a Backup Account—Don’t Put All Your Eggs in One Basket; Maintain at Least Two Accounts at Different Banks

Most importantly:Receiving an inquiry letter doesn’t mean it’s a done deal, but failing to take it seriously will definitely lead to trouble. In most cases where accounts are suspended, it’s because the user didn’t take the first inquiry letter seriously or respond to it properly.

VI. About Qi Cai Ying

Founded in 2015, Qicaiying specializes in company registration in Hong Kong and overseas, bank account opening, and cross-border financial and tax compliance, and has served thousands of cross-border e-commerce, foreign trade, and global expansion companies. We provide full-service assistance for CoR tax residency certification—from eligibility assessment to certificate delivery. All you need to do is provide the basic information; we’ll handle the rest.

✔ Over 10 years of experience in Hong Kong company services

✔ Full-service handling—no need to travel to Hong Kong in person

✔ Automatic reminders for certificate expiration, ensuring uninterrupted long-term maintenance

Cell phone: 18676749275 ｜ WeChat: qcygscszk

Contact us now for a free compliance risk assessment.